{"product_id":"aquascape-heavy-duty-pond-underlayment-precut-geotextile-liner-protection-5-x-10-to-15-x-25","title":"Aquascape Heavy-Duty Pond Underlayment – Precut Geotextile Liner Protection, 5' x 10' to 15' x 25'","description":"\n\u003cstyle\u003e\n.ppd-ulhd{font-family:'Source Sans 3',Arial,sans-serif;color:#222;max-width:860px;line-height:1.6}\n.ppd-ulhd h2{font-family:Montserrat,Arial,sans-serif;font-size:1.2em;color:#145382;border-bottom:2px solid #008FD1;padding-bottom:6px;margin:26px 0 12px}\n.ppd-ulhd .chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}\n.ppd-ulhd .chip{background:#eaf5fb;border:1px solid #4EB4C2;border-radius:16px;padding:4px 12px;font-size:.88em;font-weight:700;color:#145382}\n.ppd-ulhd .note{background:#eef8f9;border-left:5px solid #4EB4C2;padding:12px 16px;margin:14px 0;border-radius:4px}\n.ppd-ulhd table{width:100%;border-collapse:collapse;margin:10px 0 18px;font-size:.92em}\n.ppd-ulhd th{background:#145382;color:#fff;text-align:left;padding:8px 10px}\n.ppd-ulhd td{padding:8px 10px;border-bottom:1px solid #dde6f0;vertical-align:top}\n.ppd-ulhd details{border:1px solid #dde6f0;border-radius:6px;padding:10px 14px;margin:8px 0}\n.ppd-ulhd summary{font-weight:700;color:#145382;cursor:pointer}\n.ppd-ulhd a{color:#008FD1}\n\u003c\/style\u003e\u003cdiv class=\"ppd-ulhd\"\u003e\n\u003cdiv class=\"chips\"\u003e\n\u003cspan class=\"chip\"\u003e11 precut sizes\u003c\/span\u003e\u003cspan class=\"chip\"\u003eAbout 30% thicker than standard\u003c\/span\u003e\u003cspan class=\"chip\"\u003eNon-slip surface\u003c\/span\u003e\u003cspan class=\"chip\"\u003eLets gases escape\u003c\/span\u003e\u003cspan class=\"chip\"\u003eBoxed\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eUnderlayment is the cushion between the soil and your pond liner. It protects the liner from rocks, roots and uneven ground that can puncture it over time. Aquascape Heavy-Duty Pond Underlayment is about 30% thicker than Aquascape's standard underlayment, for rocky, root-filled or uneven sites, and it still spreads easily with a non-slip surface.\u003c\/p\u003e\n\u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eOrder the same size as your liner.\u003c\/strong\u003e Underlayment goes under the entire liner, including the edges tucked under your coping stones. If your liner is a 15' x 20', order the 15' x 20' underlayment. Between sizes, size up. Not sure of your liner size? Use our \u003ca href=\"https:\/\/pondprodirect.com\/blogs\/pond-building-installation\/pond-liner-sizing\"\u003eliner sizing guide\u003c\/a\u003e.\u003c\/div\u003e\n\u003ch2\u003ePick your size\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eYour project\u003c\/th\u003e\n\u003cth\u003eUnderlayment size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall pondless waterfall stream or fountain basin\u003c\/td\u003e\n\u003ctd\u003e5' x 10' or 7.5' x 7.5'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall water garden, 8' x 10' to 10' x 12' liner\u003c\/td\u003e\n\u003ctd\u003e8' x 10', 10' x 10' or 10' x 12'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium pond, 10' x 15' to 12' x 15' liner\u003c\/td\u003e\n\u003ctd\u003e10' x 15' or 12' x 15'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarger pond with the \u003ca href=\"https:\/\/pondprodirect.com\/products\/carlisle-aquatough-pond-liner-15x20-45mil\"\u003eCarlisle AquaTough 15' x 20' liner\u003c\/a\u003e\n\u003c\/td\u003e\n\u003ctd\u003e15' x 20'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLong streams or ponds larger than 15' x 25'\u003c\/td\u003e\n\u003ctd\u003eCombine pieces, overlapping seams by about 12 inches, or ask us about bulk rolls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAquascape (part numbers 42135 to 42149)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSoft polypropylene geotextile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003eAbout 30% thicker than Aquascape Standard Underlayment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface\u003c\/td\u003e\n\u003ctd\u003eNon-slip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas permeable\u003c\/td\u003e\n\u003ctd\u003eYes, lets gases escape so they don't get trapped under the liner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003ePrecut and boxed for easy transport and storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eQuestions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I really need underlayment?\u003c\/summary\u003e\u003cp\u003eYes, under any flexible liner. One sharp rock or root can puncture a liner months after install, and finding that leak usually means pulling out rock. Underlayment is the cheapest protection in the project.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHeavy-duty or standard?\u003c\/summary\u003e\u003cp\u003eChoose heavy-duty for rocky, root-filled or uneven soil, or any build with heavy boulders. On smooth, rock-free soil, standard underlayment is usually enough.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install it?\u003c\/summary\u003e\u003cp\u003eLay it loosely across the whole excavation before the liner, letting it settle into the shelves rather than pulling it tight. Overlap seams by about 12 inches. Then lay the liner on top.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it go on top of the liner too?\u003c\/summary\u003e\u003cp\u003eYes. Many builders add a layer over the liner where heavy boulders will sit, for extra protection.\u003c\/p\u003e\u003c\/details\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Do I really need underlayment?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, under any flexible liner. One sharp rock or root can puncture a liner months after install, and finding that leak usually means pulling out rock. Underlayment is the cheapest protection in the project.\"}}, {\"@type\": \"Question\", \"name\": \"Heavy-duty or standard?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose heavy-duty for rocky, root-filled or uneven soil, or any build with heavy boulders. On smooth, rock-free soil, standard underlayment is usually enough.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lay it loosely across the whole excavation before the liner, letting it settle into the shelves rather than pulling it tight. Overlap seams by about 12 inches. Then lay the liner on top.\"}}, {\"@type\": \"Question\", \"name\": \"Can it go on top of the liner too?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Many builders add a layer over the liner where heavy boulders will sit, for extra protection.\"}}]}\u003c\/script\u003e\n\u003cp\u003eNot sure what size you need? Email \u003ca href=\"mailto:support@pondprodirect.com\"\u003esupport@pondprodirect.com\u003c\/a\u003e or call (765) 508-4352, Monday to Friday, 9 AM to 5 PM Eastern, with your pond or stream dimensions and we'll size it for you.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Aquascape","offers":[{"title":"5' x 10'","offer_id":68080869998913,"sku":"42135","price":31.0,"currency_code":"USD","in_stock":true},{"title":"7.5' x 7.5'","offer_id":68080870031681,"sku":"42136","price":34.88,"currency_code":"USD","in_stock":true},{"title":"8' x 10'","offer_id":68080870064449,"sku":"42137","price":49.6,"currency_code":"USD","in_stock":true},{"title":"10' x 10'","offer_id":68080870097217,"sku":"42138","price":62.0,"currency_code":"USD","in_stock":true},{"title":"10' x 12'","offer_id":68080870129985,"sku":"42139","price":74.4,"currency_code":"USD","in_stock":true},{"title":"10' x 15'","offer_id":68080870162753,"sku":"42140","price":93.0,"currency_code":"USD","in_stock":true},{"title":"10' x 20'","offer_id":68080870195521,"sku":"42141","price":124.0,"currency_code":"USD","in_stock":true},{"title":"12' x 15'","offer_id":68080870228289,"sku":"42142","price":111.6,"currency_code":"USD","in_stock":true},{"title":"15' x 15'","offer_id":68080870261057,"sku":"42149","price":139.5,"currency_code":"USD","in_stock":true},{"title":"15' x 20'","offer_id":68080870293825,"sku":"42143","price":167.99,"currency_code":"USD","in_stock":true},{"title":"15' x 25'","offer_id":68080870326593,"sku":"42144","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/6919\/0977\/files\/aquascape-heavy-duty-pond-underlayment-p-1.jpg?v=1793170612","url":"https:\/\/pondprodirect.com\/products\/aquascape-heavy-duty-pond-underlayment-precut-geotextile-liner-protection-5-x-10-to-15-x-25","provider":"Pond Pro Direct","version":"1.0","type":"link"}